Car-brake mechanism.



R. Jh. & B. ONEILL.

CAR BRAKE MECHANISM.

APPLICATION FILED ocT. 11, 1913.

1 ,1 84, 1 1 9. Patented May 23, 1916.

2 SHEETS-SHEET I.

R. J. & B. l. ONEILL.

CAR BRAKE MECHANISM.

APPLICATION FILED ocT. H, 1913.

1,1 84,1 1 9. I Patented May 23, 1916.

2 SHEETS-SHEET 2.

THE COLUMBIA PMNOGRAFH C0.. WASHINGTON; D. C.

RICHARD J. oNEIDD, I' DENvEncoLoRADo, AND BRYAN J. oNEIDD, or rEoItIn,v

` y ILLINOIS.

CAR-BRAKE MECHANISIVI.

Specification of Letters Patent.

Patented May 23, 1916.

' Application filed October 11, 1913. lSerial No. 794,710.

0f the city of Denver, county of Denver, and- Y State of Colorado, and BRYAN J. ONEILL,

of Peoria., county of Peoria, andv State of Illinois, citizens of the United States, have invented certain new and useful Improvements in Car-Brake Mechanism; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a brake mechanism and pertains particularly to mechanism for operating car brakes.

, An object of the invention is to produce a mechanism for operating the brakes of railroad cars, particularly freight cars, in which the power used in setting the brakes is gained through a' worm and worm-wheel structure.

Another object is to construct a mechanism for operatinga car brake in which a worm and worm-wheel gearing is employed together with certain gearing the wheels of which bear such a relation to one another that the brake shoesl may be brought against the wheels or released with the fewest number of turns of the hand wheel or operating wheel. Y

Another object is to construct a brake operating mechanism including a part that vmay be operated by a person standing on the top of the car, and a part which may be operated also at the side of the car by a person on the ground.

To the end that the invention may be clearly understood we have provided the accompanying drawings, wherein, y

Figure 1 is an end elevation of a portion of a car showing the brake operating mechanism. Fig. 2 is a side elevation of a portion of the end of a car also showing the brake mechanism, certain parts bein-g shown only in dotted lines. Fig. 3 shows a bracket constituting bearings for certain shafts. Fig. 4f is a plan of a portion of the end of a car showing the brake mechanism, and Figs. 5 and 6 are details of the said mechanism.

A indicates the ca'r.

B is the usual vertical brake-staff, or shaft, mounted at the end of the car in journals C and provided at its upper end with the usual hand wheel D and its lower .end -is provided with a beveled gear E. In mesh with the gear E is a beveled pinion F fixed on a shaft G extending at right vangles to the said shaft B and supported from the car by suitable bearing-brackets or hangers H, V.

U is a stub shaft lying parallel to the shaft G and mounted in the bearing V. It Isprovided atits outer end with a hand wheel T and is also provided with a gear X in mesh with a pinion I/V secured on the shaft Gr. This is most clearly shown in Figs. l land 6. v

IQ represents, as a whole, a casting comprising an upright portion L having a pair of arms M extending from it provided each with a hole N in its extremity and creating bearings for the shaft G in addition to the bearings I-L-V described.Y This said casting .l is securedto the under side of the car in any suitable manner and its upper and lower portions are provided with holes O to receive an Yupright shaft P which may be termed a worm-wheel shaft, there being a worm-wheel Q affixed to it which is in mesh with a worm Q secured on the shaft G between the described arms M. The worm-wheel shaft within the frame L constitutes a drum upon which the brake chain R, Fig. 2, is adapted to wind, said chain having connection with the usual brake-rod S connected to the brakelever mechanism not sho-wn.

While the described structure is shown eX- tending from the end of the car, see Figs. 2 and 4, the parts may be otherwise disposed so as t0 lie under the car out of the way o-f persons workingabout the car and to 'avoid being .broken or disarranged by striking obstructions, but this is all within the invention. The disposition of the parts for convenience sake and for safety readily suggesting itself to the manufacturer.

In operation the rotation of the hand wheel D results in imparting rotation to the worm Q which in turn rotates the wormwheel Q and its shaft P which constitutes a winding drum for the chain R described. The diameter of the shaft forming the winding drum may be such that a partial rotation of the worm wheel will impart the required amo-unt of movement. to fully tighten or loosen the brake shoes not shown. That is to say, the drum' may be of such a diameter that but a comparatively few revolutions of the worm Q will be required to impart the needed movement tothe worm-wheel and shaft P. Again, due to the relationof theY considering the power that can be produced,

and in'eonnection with a vbrake the advantages are still greater from the fact that the form andV worm-wheel cannot ,move vvoluntarily relatively toone another andl thus no worm and worm wheelforming therequired lockQ: When, therefore, the brake shoesare set their release cannot occurexceptbymam ual eifort. Y

The relation of the beveledV gear Eto the beveled pinion F and the relation of the gear X to the pinion W are substantially identical so that in turning either hand wheel D T the rotation of the shaftG will be much v faster than the stub shaft U or the shaft B which is one-of the desires and aims of the invention One' advantage 1n this construe# tion, that is to say, the use of thehand motion can readily take upy the slack in theVV brake chains and set the brakes ina much shorter time than 'though 'the-hand wheelv were afiiXed to the w'ormfshaft.Vv Added tov` i this advantage of quickly setting the brakes from the ground or from the "toplof the car Vis that ofthe use of a worm and worm -wheel which obviates the necessity of'using such means asf-a pawl and ratchetfto prevent the retrograde movement of the winding drum.

Having described the invention we claim 1. In a brake for railway cars, the combination of a winding drum suitably journaled on the car, aworm wheel xed relative to it, a shaft including a. worm engaging the worm wheel, a gear fixed relative tothe shaft, a

Unpicia'of thlrpatent may Vbe obtained for ve cents each, byV addressing the onimissionerfof 'Patentl, f Y

greater than the speed ofjits own rotation. pawl and ratchet mechanism 1s requlred, the g ,vertically disposed shaft provided withV a gear in mesh with the first gear and of larger size than said first gear, said L'shaft" extending to the top of the car, a third'shaftv y includingTanroperating means lying at the side 'ofthe' car, -andintermeshing gearing carried bythe vfirst and' third described shafts,the said third described shaft dueto said gearingadaptedto impart a speed of rotation to thel said first described s haft 2. In a brake forrailwayears, the combi# nation with a ,winding drum YsuitablyV jourlnaled, a worml wheel Vfixed relative to it, a'

mesh with one of the saidplnions, and a second operating means including a gear in mesh vwith the other piniongoffthe pair, one of the said operating means lyingat the top Same.

the car, a worm wheeliXed relative'to the 'same, a shaft including a worm in mesh ,with the worm wheel,a gear V,wheel fixed on the f 1 of ther car andthe otherat'the side ofthe 3; In a brake for railway cars,-the' combie i natlon with a drum suitablyjournaled onVV shaft, a second shaftV including an operating VKmeans affixed to it and havingafgear wheelv larger than the first gear, a third shaft in-j7j5V cluding Va rotatable operating means, and

gearing carried by 'the same and operatively f' engaging the first described shaft andadaptl ed .by'means of said gearin'gtojv impart a speedV of rotation to Vvthe saine greater: than its own speedofrotation.' 1 f tures, in presence of two witnesses.

RICHARD J. oNEiImf i t i 

